A conductive connection device and a DC circuit breaker using the device

Abstract

The present invention relates to the technical field of circuit breakers, in particular to a conductive connection device and a DC circuit breaker using the device. The conductive connection device includes: a flexible connection seat, which is fixed and electrically connected to the lower busbar; The connection seat is fixed and electrically connected with the soft connection seat, the upper end of the conductive soft belt is fixed with an upper fixed block for fixed electrical connection with the moving contact, and the lower end of the conductive soft belt is fixed with a lower fixed block for fixed electrical connection with the moving contact . The beneficial effect is that: the layout of the conductive flexible belt is changed from horizontal to vertical, which reduces the occupation of horizontal space, so it can be adapted to the occasions where the installation space is relatively narrow; the assembly operation between the conductive flexible belt and the flexible connecting seat is only once, It can simplify the assembly operation and make the operation easy; both the upper fixed block and the lower fixed block are fixed and electrically connected to the moving contact, and the connection points are changed to two places, which increases the connection position, increases the contact area, reduces the contact resistance, and improves the product use performance.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a conductive connection device and a DC circuit breaker using the device. Background technique [0002] The DC circuit breaker has the function of reliably cutting off the fault current of the DC circuit. It is the core component of the DC power supply and distribution system. Therefore, the DC circuit breaker is widely used in subways, smelting, chemical industry, solar power generation, mining and other industries. [0003] The Chinese invention patent application with the application publication number CN104143456A discloses a main circuit of a DC circuit breaker, including a static contact, a movable contact that can swing left and right, an upper busbar and a lower busbar, wherein the static contact is fixed to the On the upper busbar, the moving contact is installed on the lower busbar through the rotation of the hinge shaft. On the lower busbar, there are two soft...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a conductive connection device to solve the problem that the leading flexible belt and the auxiliary flexible belt are horizontally arranged at intervals from left to right in the prior art, which leads to cumbersome assembly operations and takes up a large horizontal space and cannot adapt to the narrow installation space. , and the relatively large contact resistance with the moving contact; the purpose of the present invention is to provide a DC circuit breaker to solve the problem of the horizontal arrangement of the leading soft belt and the auxiliary soft belt in the prior art. It leads to cumbersome assembly operations, takes up a large horizontal space and cannot adapt to the narrow installation space, and the problem of relatively large contact resistance with the moving contact

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